Hydrocarbon rock-drill.



No. 840,867, PATENTED JAN. a, 1907. J. V RICE, JR. HYDROGARBON ROCK DRILL.

APPLICATION FILED MAY 9, 1903.

2 SHEBTSw-SHEET 2 .the same.

TES

TEN

FFICE JoHNv. RioE, JR., or EDGEWATER PARK, NEW JERSEY.

HYDROCARBON ROCK-DRILL. y

Specification of Letters Patent.

vPatented. Jan. 8, 1907.

To all whom it may concern:

Be it known that I, JOHN AV'. RICE, Jr., a citizen of the United States of America, and a resident of Edgewater Park, in the county of Burlington, State of-New Jersey, have invented certain new and useful Improvements in Hydrocarbon Rock-Drills, of which the following is a specification.

My present invention relates to an iinprovement in hydrocarbon or gas-actuated rockdrills, and more particularly to the means for rotating the drill.

' The object is to simplify the construction and provide a more eiiicient rotating device, as well as to improve the drill in many other vres ects, and the invention consists, essentia ly, in the construction, arran ement, and combination of parts, substantia ly as will be' hereinaftermore fully described and claimed.

In the annexed drawings, illustrating my invention, Figure 1 is a vertical longitudinal section of my improved hydrocarbon rockdrill. Fig. 2 is a horizontal sectional plan of F ig. 3 is a cross-section on the line :r of Fig. 1. Fig. iis a sectional view of a modification ofthe invention.

Similar numerals of reference designate like parts throughout all .the figures of the drawings.

1 denotes the main cylinder, which may be of any suitable or preferred design and form, being generally open at one end and closed at the other and made either with or without a water-jacket. At the closed end is the explosion-chamber 40, `while the other or open end is ,formed with an integral barrel-like extension 7, which serves as a guide and support for the outer eIid of the elongated piston 12. Said cylinder extension 7 is provided with longitudinal slots 8 8, formed opposite to each other and receivingvthe sliding blocks 9 9,.which are designed to reciprocatein said slots as guides. The blocks 9 are engaged iston plays back and forth insideof the holow extension 7 andzcan-ies vthe piston-rod or by pins or studs 11, that pass through roundvas ignited in the combustiondrill-supporting rod 18, the means for imparting rotation to said rod, and the means for cushioning the-blow of the tool. This rod 18 has on its outer end the drill-chuck 16, adapted to hold any suitable drill or other tool. Also it has a shoulder 18, which is adapted to abut against the outer end of piston 12 at certain times. The exterior surface of the drill-sup orting rod.18, which rod may also be termed) the piston-rod, is, between the chuck 16 and the shoulder 18, slightly rounded, dished, or concaved at 17, making it, as it were, in the shape of a spool, for a purpose to be presently explained.

Piston-rodi` 18 moves obviousl with the piston 12; but it also has a'secon ary movement Within the piston, and its inner end is movably connected to the piston in such a manner that intermittent partial rotations may be imparted to the piston-rod on each return stroke, the means for thus accomplish-` ing the rotation of the drill being as follows: 19 denotes a sleeve or ring thatvencircles the inner end of piston-rod 18 and is heldthereon by an end plate 27, secured to rod 18 bya center screw 38 or by some other equivalent device. This sleeve has a couple of oppositely-located integral lugs-or projections 15, that engage the diagonal slots 14 in the piston 12, so thatas the ring'19 reciprocates it will be caused to rotate. The inside surface of rin 19 is'recessed toreceive and contain smal balls or rollers 20, that are normally pressed against the rod 18. Hence the ring 19 and inner rollers 20 constitute a friction-clutch.

When the ring 19 revolves in one direction,

the rollers 20 play idly in the recesses withv out grippin the rod 18 but when rin rotates in t e yother direction these ro 1ers are drawn into the smaller ends of the recesses and are thus caused to bind between the ring 19 and rod 18, clutching the ring to the rod, so that as the ring revolves in consequence of the movement of lugs 15 in slots 14 the iston-rod and the drill carried thereby Wil likewise be revolved, a movement which preferabl occurs on the return stroke of the drill, an it will thus be seen that the means for rotatin the drill are not brought into action directly by the reciprocation of the piston, but by the rods return moveloo ment after the' yielding movement of the piston-rod which produces the cushion eHect.

The cylinder 1 and 'connected parts are carried by some suitablel sup ortinv-rame, as 4,2, on which .they are a justalile by a IIO ' the usual tripod-support may be utilized.

Vor a plurallty of leaves.

. being a sectional beveled ring 26 between against the side of rod 13.

runninor of the shaft.

, gas, opening from the chamber 51 to the ex- `ample-one end being fast and the other free,

may be used, if desired. Connecting-rods 10 screw 43er by some other equivalentand convenient devlce 1n connection with which l I have shown in the drawings one form of j means for yieldingly connecting the pistonrod and piston. This means consists of a sej ries of springs 22, arranged around the drillj carrying rod 18 and pressing upon and against f the side of the latter for the purpose of making the movement thereof yielding and easy. These springs 22 may consist of a single leaf Their free ends have cup-bearings 23, carrying antifrictionballs 24, that travel on the concave line 17 of the spool portion of'rod 18, thus preventing` friction and' giving a strong and even pressure. The inner ends of springs 22 are preferably bent to take into notches on the outside of piston 12 and are held in thisposition by the sleeve 25, which screws over the end of piston 12 and is interiorly beveled, there sleeve 25 and springs 22, which is tightened more or less against thesprings by the screwing up of the sleeve` 25 upon and against the sectional ring 26, whereby the springs 22 are caused to bear with greater or'less tension In Fig. 4 I have. shown a modification of the springs'for connecting the piston and the piston-rod.- The sleeve 25 is extended to form along barrel 25, and secured on'the inside thereof, by riveting or otherwise, are springs 55-a series of four of them, for exsaid springs carrying centrally the clips 56, in which the rollers 57 are journaled that bear against the concave spool 17 of piston-rod 18. `Bolted to the cylinder 1 in any suitable manner is a frame or casting 2, which rovides the head of the cylinder, if desire as shown, and also which affords a substantial bearing across the end Aof the machine for a main transverse shaft 3, a bushin being preferably placed in the bearing for lt e easy This shaft has on each end a {Iy-wheel 4, provided with a crank-pin 4a. Two fly-wheels are preferred; but one extend from thepins 4al to the piston-carried pins or journals 11. On the shaftA 3 is a worm 5, that meshes with and drives a small worm-pinion 6 on a shaft 29, supported at right angles to shaft 3 in suitable bearings in frame 2.

The frame of casting 2 contains an inletchamber 51, having aI-rinduction-opening 52, entered by' a pipe or passage leadinfT from the vaporizer and the gasolene or hydrocarbon. tank to supply the requisite explosive mixture of air and as to the cylinder.

33 denotes t e inlet-valve for the air and plosion-chamber 40, said valve being carried by a stem 35, having a closing-spring, while the end of the stem projects into a position to be struck by the cam 31 on the shaft 29, and 32 denotes the exhaust or outlet valve for the spent products ofl the explosions, leading from the explosion-chamber 4() into the exhaust-chamber 53 and thence to atmosphere through some suitable vent or eduction-port, said valve 32' having a stem 34, provided with a closing-spring, while the end of the stem 34 projects into a position to be struck by another cam 30, which is fast on the shaft Y 29, the said two cam devices 30 and 3,1 being so arranged relatively to each other, projecting as they do in diiierent directions, that i.

particular kind. Ordinarily I have em-` ployed a common spark-plug, as 50.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a rock-drill or similar machine, the

combination with a cylinder and a piston, of

a piston-rod, slidable within the piston and means for rotating said rod, said means being carried in part by the piston and in part on the rod, and consisting of a rolling-device clutch. v 2. In a rock-drill or similar machine, the combination with acylinder and a piston, of a piston-rod carrying a drill or other tool and slidable within the piston, means on the piston and cooperating means on the piston-rod for rotatin the drill, the same operating automatica ly, and consisting of a' rollingdevice clutch.

3.l In a rock-drill or similar machine, the combination with a cylinder and a piston, of a piston-rod carrying the drilling-tool, said rod being slidable within .the piston and. K

IOO

clutch carried by the piston-rod and operc ated by connection with'the piston. y

4. In a rock-drill or similar machine, the

combination with a cylinder, a lpiston there# 1n, and a piston-rod carrying a drill and sl'idable within said piston, of means for rotating the drill consisting essentially of rolling devices carried by the rod and acting as an automatic clutch'together with a ring surrounding said rolling devices and engaging the wall of. the piston. A

5. In a rock-drill, the combination with a cylinder and a piston, of a piston-rod carryvided with u ried at the end ofthe rod and ing the drilling or other tool, and means for rotating the drill consisting essentially of rolling slots in the piston.v

6; In,a hydrocarbon rock-drill, the combination of a cylinder, a piston therein having oblique slots, a piston-rod slidable Within the piston and carrying a drill or other tool, means for moving said piston-rod with the piston and also permitting said piston to have an additional movement relatively to the piston,A and means for automatically imparting a rotation to the drill sentially of a clutch on the end ofthe pistonrod having roll-ing devices and a ring piston.

7. In a hydrocarbon rock-drill, the combination of a cylinder having an. eX-tension forming a'guide, a slotted piston in said cylinder and guide, a piston-rod for carrying the tool, means on the piston exerting a pressure against the, side of the piston-rod to cushion the blow, and means for rotating the drill consisting essentially in clutching-rollers caring them having the piston. Y.

8. In a hydrocarbon rock-drill, the combination of a cylinder having a guide, a slotpins engaging the slots in ted piston in said cylinder and guide, a piston-rod slidable within the piston and carrying the tool, means on the piston exerting pressure against the side ofthe rod to lcushion the blow, and a clutch device, consisting of rollers. or balls and a ring surrounding= said balls or rollers and having projecting pins that engage the slots in the piston.

9. In a hydrocarbon rock-drill, the com devices and a ring surrounding saidy rolling devices and having pins that engage consisting es- Prof' pins engaging thev slots in the a ring surround- I bination of an 'explosion-cylinder and a piston, of a piston-rod carrying the drilling-tool and slidable Within the piston, means on the piston exerting a pressure a ainst the pistonrodgto cushion the blowl an means for automatically rotating the drill, said means being in .fpart in the piston and in ton-rod, substantially .as described.

v'10. In a hydrocarbon rock-drill; the combination With an explosion-cylinder and a piston, of a piston-rod carrying the drill and slidable automatically rotating the drill, said means being in part in the piston and in part on the .piston-rod, substantially as described.

11.',In a hydrocarbonro'ck-drill, the combinatio'n of an explosion-cylinder and a piston, of a piston-rod carrying the drilling-tool and'slidable Within the piston, means on the piston exerting a pressure a ainst the'pistonrod to cushion the blow, and means for automatically rotating the drill, said means consisting of. a rolling-device clutch.

I 12. In a hydrocarbon rock-drill, the combination With an explosion-cylinder and a piston, of a piston-rod carrying a drill and slidable Within the piston, means on the piston exerting a pressure against the piston-rod to cushionthe blow, and means for automatically rotating the drill, said means consistin of rollin devices and a ring surrounding sai rolling evices and having pins that engage vslots in the piston.

. Si ned at New York city this 9th day of ApriI, 1903.

. JOHN V. RICE, JR.

part on the pis- Within the piston, and means for 

